Diamond blade



FIG. 1 is a front elevational view of a diamond blade showing my newdesign;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is an elevational plan view thereof;

FIG. 4 is a left side elevational plan view thereof;

FIG. 5 is an enlarged cross-sectional view along the A—A line;

FIG. 6 is an enlarged cross-sectional view along the X-Y line; and,

FIG. 7 is a reference illustration.

The ornamental design for a diamond blade, as shown and described.